Seiko Cal. 3820 - 371

The Seiko 3820-371 represents an important milestone in Seiko's 1976 lineup. It features a Black dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-7a3dcb1ae3fa]

Also known as: Tuna, Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1976

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